Android: Avoid linking with --gc-sections.

build/config/sanitizers/sanitizers.gni

 # Copyright 2015 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/config/chrome_build.gni")
 
 declare_args() {
   # Compile for Address Sanitizer to find memory bugs.
   is_asan = false
 
@@ skipping 116 matching lines @@
   use_custom_libcxx =
       (is_asan && is_linux && !is_chromeos) || is_tsan || is_msan || is_ubsan ||
       is_ubsan_security || use_libfuzzer || use_afl
 
   # Enable -fsanitize-coverage.
   use_sanitizer_coverage =
       use_libfuzzer || use_afl || sanitizer_coverage_flags != ""
 
   # Detect overflow/underflow for global objects.
   #
-  # Android build relies on -Wl,--gc-sections removing unreachable code.
-  # ASan instrumentation for globals inhibits this and results in a
-  # library with unresolvable relocations.
-  # TODO(eugenis): find a way to reenable this.
-  #
   # Mac: http://crbug.com/352073
-  asan_globals = !is_android && !is_mac
+  asan_globals = !is_mac
 }
 
 if (use_afl && sanitizer_coverage_flags == "") {
   sanitizer_coverage_flags = "trace-pc"
 } else if (use_sanitizer_coverage && sanitizer_coverage_flags == "") {
   sanitizer_coverage_flags = "edge,indirect-calls,8bit-counters"
 }
 
 using_sanitizer =
     is_asan || is_lsan || is_tsan || is_msan || is_ubsan || is_ubsan_null ||
@@ skipping 16 matching lines @@
 # this condition. We may also be able to find another way to enable your case
 # without having people accidentally get broken builds by compiling an
 # unsupported or unadvisable configurations.
 #
 # For one-off testing, just comment this assertion out.
 assert(!is_debug || !(is_msan || is_ubsan || is_ubsan_null || is_ubsan_vptr),
        "Sanitizers should generally be used in release (set is_debug=false).")
 
 assert(!is_msan || (is_linux && current_cpu == "x64"),
        "MSan currently only works on 64-bit Linux and ChromeOS builds.")